1...	Bxf3
2.Bxf3	Nxd4
3.Bxd5	Rxd5
4.Nxd5	Nf3+
0-1
5.Kg2 Nxe1+ and White's idea of Nxe7+ is thwarted. If 5.Kh1 Qh3 and mates
Petrov-Alster (1950)